In a continuous effort to beat Toyota's Prius, Ford has announced a new 100 MPG Fusion.

Ford said its latest version of the 2013 Fusion, the plug-in hybrid model called the Fusion Energi, achieves the electric equivalent of 108/92/100 MPGe city/highway/combined respectively. This beats Toyota's Prius plug-in, which gets 95 MPGe combined.

“The Fusion Energi plug-in hybrid is the exclamation point for Ford’s transformed lineup of fuel-efficiency leaders that now beats Toyota across the board,” said Raj Nair, group vice president, Global Product Development at Ford.

According to Ford, drivers can save about $6,850 on gas over a five-year period with the Fusion Energi.

Ford currently has a regular gas Fusion, two turbocharged EcoBoost models and a hybrid version of the Fusion. The 2013 Ford Fusion hybrid recently scored an EPA certified 47 MPG combined.

However, Ford was recently hit with a class-action lawsuit for alleged false and misleading marketing campaigns for the 2013 C-MAX and Fusion hybrid vehicles. McCuneWright, a law firm based in California, was the one to launch the suit. C-MAX customer Richard Pitkin purchased a C-Max Hybrid vehicle in October and alleged that he only averaged 37 MPG during that time, which is significantly lower than the EPA rating of 47 MPG.

Despite that hiccup, Ford sees a healthy future in regards to sales. Ford predicts hybrid/electric vehicle sales to exceed 19,000 in Q4 2012. That's more than half of the entire year's hybrid sales.